Excitation power and Er3+ concentration effect on the color quality parameters in Y2O3?Er3+?Yb3+?Tm3+ nanophosphors

Sevcan Tabanli*, Gonul Eryurek

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

2 Atıf (Scopus)

Özet

Y2O3 nanocrystalline phosphors doped with Er3+?Yb3+?Tm3+ ions were prepared using thermal decomposition technique at 500°C. Pure cubic phase of Y2O3 with an average crystallite size ∼29 ± 4 nmwas determined from x-ray diffraction and high-resolution transmission electron microscope measurements. Their upconversion luminescence spectra were measured under 975-nm laser diode excitation at room temperature. A bright blue emission was simultaneously observed at 480 nm due to the 1G43H6 transition of Tm3+ions∗with the green (550 nm) and red (670 nm) emissions due to the 2H11?2, 4S3?24I15?2 and 4F9?24I15?2 transitions of Er3+ ions, respectively. Relative emission intensities of these colors were significantly affected by the Er3+ concentration as well as the excitation power density of 975-nm laser light. Color quality parameters and the color tuning abilities were determined from the Commission International de I'Echairage 1931 chromaticity diagram analysis, color rendering index, and their correlated color temperature values. A careful color tuning from cool to warm white light in Y2O3?Er3+?Yb3+?Tm3+ phosphors was achieved by controlling both the doping concentration of Er3+ ions and the excitation power density of the 975-nm laser light.

Orijinal dilİngilizce
Makale numarası026008
DergiJournal of Nanophotonics
Hacim12
Basın numarası2
DOI'lar
Yayın durumuYayınlandı - 1 Nis 2018

Bibliyografik not

Publisher Copyright:
© 2018 SPIE.

Finansman

This research was supported by the Istanbul Technical University Scientific Research Projects Department (ITU BAP, Project No. 39283). The author, Sevcan Tabanli, would also like to show her gratitude to the Scientific and Technological Research Council of Turkey for granting scholarship for PhD studies (TUBITAK, 2211C).

FinansörlerFinansör numarası
ITU BAP39283
Istanbul Technical University Scientific Research Projects Department

    Parmak izi

    Excitation power and Er3+ concentration effect on the color quality parameters in Y2O3?Er3+?Yb3+?Tm3+ nanophosphors' araştırma başlıklarına git. Birlikte benzersiz bir parmak izi oluştururlar.

    Alıntı Yap